25468921988 has 12 divisors (see below), whose sum is σ = 45235846992. Its totient is φ = 12544394280.

The previous prime is 25468921969. The next prime is 25468921997. The reversal of 25468921988 is 88912986452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25468921988.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47516378 + ... + 47516913.

It is an arithmetic number, because the mean of its divisors is an integer number (3769653916).

Almost surely, 2^25468921988 is an apocalyptic number.

It is an amenable number.

25468921988 is a deficient number, since it is larger than the sum of its proper divisors (19766925004).

25468921988 is a wasteful number, since it uses less digits than its factorization.

25468921988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95033362 (or 95033360 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 62.

The spelling of 25468921988 in words is "twenty-five billion, four hundred sixty-eight million, nine hundred twenty-one thousand, nine hundred eighty-eight".